Improvement in latches



dinard tatraatwt dimite.

THOMAS DOLAN, OF ALBANY, NEW YORK.

Letters Patent No. 103,586, dated May 31, 187.0; antedctted May 20,1870,.

- IMPROVEMENT IN LA'rcHns.

The Schedule referred to Ain these Letters Patent and making part of thesame.

To all whom it may concern:

Beit known that I, THOMAS Dorian, of the city and county of Albany, lStater of New York, have invented Ycertain new and useful Improvementsin Latches forDoors,Shutter-Bars, &c.; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing forming a part of thisspecification, in whieh-,V 4,

'Figure 1 represents a perspective view of the latch, as improved,securedby the holding catch.

Figure 2 represents a perspective view. :of the .latch secured by thelocking-catch. l

Figure 3 is a longitudinal section of the invention'. Figure 4 is across-section shown secured by holding-catch.

Figure 5 is a cross-section shown secured by locking-catch.

The nature of my invention consists in pivoting to the catch-plate adouble catch,` which double catch consists of a holding-catch to be usedthrough the day, or when persons -are allowed to pass into and frbm theroom, while the second catch, which I term. the lockingcatch, is to beused when the door is to be secured against the entrance of otherpersons outside, asin the night. Y

To the head` of the latch is given a curved forni of line which willpermit the locking-catch to swing over it and bind it down it its place.

To enable others skilled in the art to x'nake and use my invention 4Iwill proceed to describe it in reference to the accouipanyingdrawing,and the letters of reference marked thereon, the same letters indicatinglike parts.,

In the drawing Arepresents a section of adoor, and B a section of "adoor-jamb, to which the latch is secured.

The latch consists in a latch-bar, O, attached to the door Ain the usualmanner, and vis constructed of which double latch consistsof aholding-catch, c, and

a locking-catch, c, made andattached 'to' each other and swinging on racommon pivot, g, figs. 4 and 5.

rlhe holding-catch c is to be used as shown in figs.

l and 4, when freedom for passage to and from the. room is allowedbutwhen it isdesired to secure the door from the inside so that partiesoutside may not eii'ect an entrance, the locking-catch e is yturned upand over the latch-bar end a, as shown vin figs. 2 and 5, and when thusturned upand over the end a, the binding-lip e', made with and forming apart ot' the catch e, bears down on thel upper edge of the latchbar andholds it from being raised up. Y

A right'or left-hand latch-bar will work in the same catches equally aswell, as shown in iig. 3.

'lhis latch, when modified, can be applied to windows, shutter-bars,shutter-gates, and the like, as well'as to doors.

The advantages attending this latch are these :r

A door can be securelyfastened without providing it with a lock, whilethe cost of its manufacture is not materially measured, the lockingdevice is always readily and easily applied and entirely dispenseswith athird piece to secure the latch-bar in its place.y

Having described my invention',

What l claim, and desire to secure by Letters Pat ent, is r i The catchE, pivoted as described, and combining the vholding-catch c andlockingcatch c, and in conrbination with the curved formed a of alatch-bar, substantially as and for the purpose set forth.

THOMAS DOLAN. ALEX. Saturnin,

NV. S.` BUCKBEE.

